Improv Everywhere — known for staging flash mobs nationwide — surprised diners at Katz’s Delicatessen by recreating the famous scene from the beloved Nora Ephron film When Harry Met Sally, in which Meg Ryan shows Billy Crystal how a woman fakes an orgasm at the iconic New York City restaurant.

The prank starts with a Harry and Sally, who are then joined by 20 additional women screaming in ecstasy while sitting across from a male counterpart at tables throughout the restaurant.

To top it all, a woman pretending to be director Rob Reiner’s mother says, “I’ll have what she’s having.”